Packing tool for forming and installing impressionable comminuted or plastic packing



Nov. 6, 1951 BROWN 2,574,169

PACKING TOOL FOR FORMING AND INSTALLING IMPRESSIONABLE COMMINUTED OR PLASTIC PACKING Filed Feb. 3, 1948 2 SHEETSSHEET l m a 3 Z 4|.\\\\\\\\\3\m fz 20 KNVENTOR.

IE. arl E-Er EILLIT'L 7/ I X BY Z a,

ATTO-RNEYS.

NOV. 6, 1951 5, BROWN 2,574,169

PACKING TOOL FOR FORMING AND INSTALLING IMPRESSIONABLE COMMINUTED OR PLASTIC PACKING Filed Feb. 3, 1948 2 SHEETS-SHEET 2 FIG.9. FIG-10.

INVENTOR.

Earl E- E1ruurn LQZQMZZ QMM Q q .712 2 ATTORN EYS.

Patented Nov. 6, I951 f PACKING TOOL FQR FORMING AND,

IN-l;

STAL LING 'IMrREssmN'AfB E "coM-j WNIITEED. B IJQ 359mm Earl- E Brown, :Camden l l L, ssign e alt: q. Ge r e A-US lsQ ygden, ,Nr v

An igat qn F b uary 8 serial'Noi @93 Other objects andadvantages' of thisinven-tion will -be apparent during the course of-the-follwing-detailed description. I

In the accompanying drawings,- forming a part of this specification, and wherein similar reference characters designate correspondingparts thruout the several views Figure 1 is a perspective view showingtheimproved tool assemblage with; packing ring segments formed therein.

Figure 2is a perspective view showing how the complementary packing ring segments are; I

shaped;

Figure 3 is a cross-sectional view showing the type of packing box for which the improved packing is best adapted.

Figure 4 is a plan view of a mold assemblage usedin forming the packing.

Figure 5 is a cross-sectionalviewtaken'thru' the 1i;n e;5 -5-- the tool structure substantially on of Figure 7.

Figurefi is a verticalcross-sectional view-taken thru the packing tool showing a packing dividing plunger in raised position; the view being taken substantially on the line 6-5 of Figure 4.-

Figure '7 is a viewof'the-parts shown in-Figure 6 but with the plunger structure-in a lowered position. 1

Figure 8- isa crossesectional-view taken substantially on the line 8--8:of l" igure 4.

Figure 9 is a plan view showing a plier -like packing holding andforming tool.

Figure 10 is a side elevation of thestooll shown ing jaw partially removed.

In the drawings, wherein for the-purposevof illustration is shown only. a preferred zembodi-nment of theinvention, theletter A may generally. designate the tool assemblage.

is associated with the mold casing, structure B An -improved packing; oldingtoolv provided .:;downwardly at l l an fe EV ce'nsis sc t as part of thewassemblage for,cooperation. vsgitli-t theamold casing. structureand: packing. dividingi plungenm w ,1 Insgenenah it isla purnoseioi the invention tai,

epmllidfi an mpressionable, packing. materiah.

formed. in thel ool, assemblage A and; held: on; supported.rupon;,thelpackinghpldingtool Lirgcomm plementa v. ments safi helatt ean be ape-l. pliedwith fa ility aboutaehaft andrwithi ns a.

paclsingeboa. .l etmate al qtvwhighthapac imqi bottom wall l2. This provides an upwardly open-i s, mnamce tl Hamishl;islaga te e ert qsire erei ta xli dr szalmdr iitteag lgsi sf l e n r amid whi awe; p as; whii 1 g qm 'emen ary as embla i rs: ate h re iw ene shim, '3zlasb lv e r ns 3m aliy extended' thruj the 'sect'ionsg and 3! an the shim; ass'how n in Figure 8;. The 'sh imifie projects radially beyond the plunger body a provide packing dividing-and -formingorflanges -32 ---and 32?; A second --shim--35 is-providedas a spacer at the lower-endof theplunges and located between the sections -3'0 andSI tl-iere J Of and secured inplace byla pin 36 The plunge'r E reciprocates within: the passageway; zo'eso thatitsupper core providing .end .'a'nd the wingsi=3-2mand 32! may. be extended and retracted with-ream: spect toltheicompartment.lfiirofi-the-moldapart lfir: Alstop collar 40:; is securedrto; the IOWGLrBHdIjOffi the-plunger as; bynmeanstofe-a set screw;wornv other pedient; 4i; shown in Ei urafil; 'I-fhel purge-11.v pose, .of:;this Aeolian islto. limit; thedupwardl extenlt SiQILOfFthfip11ln QlI1SoJ1a to accurately1-.position z 3 the packing forming portions thereof within the mold compartment IS.

A countersunk opening 50 is provided in the lower end of the plunger adapted to receive the upper end of a compression spring 5| which is seated upon a centering screw 52 detachably located in the bottom wall [2 of the casing srtucture; the spring normally urging the plunger to the up position shown in Figure 8.

The packing holding tool forms part of the mold structure for the packing material. It consists of plier-like lever portions 60 and GI pivoted at 62, and having handle portions fill and SI respectively. The levers 60 and ii are each laterally offset at 62, shown in Figure 10 at their' forward ends, and provided with forwardly projecting portions 63 respectively supporting complementary mold segments or heads 64 and 65 each of which is a true half circle. A Spring 61 normally urges the segments 64 and 55 apart to the position shown in Figure 9. It is to be noted that the portions 63 are connected close to the ends of the segments so that the portions 53 lie quite close together when the packing holdi118 tool F is closed within the mold end of the assemblage, as shown in Figure 1. When the end edges 10 of the segments are in surface contact, the inner peripheral surfaces 64 and 65 of segments 6a and no form a true circle. It is upon these peripheries 64 and 65 that the packing segments are formed, and to maintain the impressionable material in place after the packing segments have been formed, depressions, serrations or other indentations ll may be provided inwardly of the peripheral surfaces 64 and 85.

The packing segment receiving portion ii of the casing structure is cut out at 80 for the purpose of receiving the supporting extensions 63 of the packing hold tool F, as shown in Figure 1. The compartment i6 is of such diameter as to snugly receive the packing forming and supporting segments 64 and 65 and to hold them spaced at their end surfaces 10 to permit the snug sliding of the dividing wings or flanges 32 and 32 therebetween, as shown in Figure 1. It is to be noted that the plunger is operated by means of a lever 90 pivoted upon a pin 9| secured in the cylindrical portion Id of the part D. The inner end of the lever 90 is provided with a disc-shaped head 92 which operates slidably within a passageway 94 formed or cut out in the facing surfaces of the plunger segments 30 and 3|, as shown in Figures 6, 7 and 8 of the drawings. A handle end of the operating lever extends thru a suitable re- 91 in the casing portion C. Movement of lever 90 slides the plunger to the extended or retracted positions. In the .downmost position, shown in Figure 7, the shim wings lie flush with the floor surface of the compartment IS. The top edges of the jaw segments lie flush with the top edge of the mold part of the casing structure and the lower edges of the jaw segments rest upon the floor I00. v

Referring to Figure 4, it is to be noted that the plunger parts 30 and 3| are each a true half cylinder so that with the shim 32 therebetween the outer packing forming convex surfaces 30 and 3| are struck from two different centers designated at 30' and .H in Figure 4 of the drawings. It was before mentioned that each segment 64 and 65 is a true half circle, so that when in the position shown in Figure 1, complete half segments (180) of packing can be formed,

4 as indicated at Ill! and III, in Figures 1 and 2 of the drawings.

With reference to the mode of forming the packing G, the plunger E is retracted as shown in Figure 7. The operator, thru the handles 80 and 80*, moves the jaw segments together until the ends 10 abut. In this position the ring formed by the segmentswill readily enter the compartment [5 of the casing structure and upon release of the handle the jaw segments will open to assume the position shown in Figure 1. The

' operator by pressing the lever 90 now moves the plunger and shim wings up into the position shown in Figure l. The packing molding surfaces consist of both sides of the wings 32 and 32 the floor surface Hill; the inner segmental surfaces of the segments 64 and 65, and the external convex surfaces 30 and 3 I" of the plunger segments. The operator, with his fingers or a temp of the same shape as the compound rings shown in Figure 2, now forces the impressionable packing material into the semi-circular cavities provided in the mold thereof and levels it of! flush with the top surfaces of the plunger, shim and jaw segments, as indicated in Figure 1. Of course the material is forcefully pressed into the mold cavities. Form the position in Figure 1, the packing holding tool F may be lifted after retraction of the plunger and the shim, by slight ,contraction of the jaw segments. The packing segments H0 and III will adhere to the packing forming or mold segments 64 and 65 of the tool F, since it has been forcedinto the depressions H. With the packing thus held in the mold segments of the tool F, the operator may permit the levers of the tool to open as wide as necessary to enable the packing segments H0 and Ill to be positioned over the shaft Hi, shown in Figure 3, at the outer end of the packing box H6. The ring segments may be extruded without mutilation from the tool segments 64 and 65 into the packing box compartment III, by means of the portion N8"- of the slidable packing gland 8. As many of the packing segments (in their complementary ring formation) as necessary, may be placed in the packing box. The packing box structure of Figure 3 is shown as incidental to the invention. Of course the gland collar H8 is of less external diameter than the internal diameter of the ring formed by the tool segments 64 and 65 when they are closed, the difference in dimensioning being .010". The thickness of the shim 32 is .022".

It is preferred to form the tool parts of stainless steel, altho the material is relatively unimportant except when it is used around acid materials. 7

Various changes in the shape, size and arrangement of parts and variation in the steps of the method of forming the packing may be made without departing from the spirit of the invention of the scope of the claims.

I claim:

1. In a devicefor the forming of ring-shaped packing of impressionable material the combination of a plier-like tool comprisin relatively pivoted lever portions having at the ends thereof mold heads each provided with a true semicircular socket therein, the levers when moved together holding said heads in a true 360 circle providing socket, a supporting casing having a compartment therein associated and arranged to receive the heads of the tool so that they will be relatively spaced just slightly out of true circle providing position, said casing compartment having a bottom moulding wall complementary to the semi-circular sockets of said tool heads, and means movably carried by said casing including a thin packing dividing structure which moves into and out of the said compartment in the space between said heads.

2. In a device for the formation of segmentalshaped packings the combination of a plier-like packing forming tool comprising a pair of pivotally connected lever portions and heads thereon each defining a semi-circular socket adapted to receive therein an impressionable material, a casing having a compartment therein opened upwardly and provided with a moulding wall in the bottom thereof, said casin compartment being adapted to receive therein the heads of said levers to hold said heads in a relatively spaced relation just slightly out of the true circular position with the edges of said heads abutting said moulding wall and the moulding wall being disposed in complementary relation to the sockets of said heads to cooperate in the formation of the packing segments, a core reciprocably carried by said casing for axial movement thru said compartment and into the sockets of the packing forming heads, and packin dividing wings carried by said core and movable therewith for entering said compartment and sockets with the core to 0001 erate with said heads in the complementary for- V mation of true semi-circular packing segments.

3. In a device for the formation of segmentalshaped packings the combination of a plier-like packing forming tool comprising a pair of pivotally connected lever portions and heads thereon each definin a semi-circular socket adapted to receive therein an impressionable material, a casing having a compartment therein opened upwardly and provided with a moulding wall in the bottom thereof, said casing compartment being adapted to receive therein the heads of said levers to hold said heads in a relatively spaced relation just slightly out of true circuular position with the edges of said heads abutting said moulding wall and being disposed in complementary relation to the sockets of the heads for the formation of the packing segments, a core reciprocably carried by said casing for axial movement thru said compartment and into the sockets of the packing forming heads, packing dividing wings carried by said core and movable therewith for entering said compartment and sockets with the core to cooperate with said heads in the complementary formation of true semi-circular packin segments, a spring carried by said casing normally forcing said core and the wings thereof into said compartment and sockets, and lever means carried by the casing for moving the core into projected or retracted relation'with respect to said compartment and sockets.

4. In a device for the formation of segmentalshaped packings the combination of a pair of segmental-shaped packing receiving heads each defining a semi-circular socket adapted to receive therein an impressionable material, means connecting said heads so that they may move towards and away from each other, a casin having a compartment therein opening upwardly and provided with a moulding wall in the bottom thereof, said casing compartment being adapted to receive therein the said head segments to hold them in spaced relation just slightly out of true circular position with the bottom edges of said heads abutting said moulding wall and the moulding wall being disposed in complementary relation to the sockets of said heads to cooperate in the formation of packin segments, a core reciprocably carried by said casing for axial movement thru said compartment and into the sockets of said packing forming segmental heads, and packing dividing wings carried by said core and movable therewith for entering said compartment and sockets with the core to cooperate with said heads in the complementary formation of true semi-circular packing segments.

EARL E. BROWN.

REFERENCES orrnn The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 174,708 Sperber Mar. 14, 1876 448,133 Cushing Mar. 10, 1891 471,894 Raymond Mar. 29, 1892 596,652 Brookfield et a1. Jan. 4, 1898 715,664 Jarboe Dec. 9, 1902 936,475 Putney Oct. 12, 1909 952,279 Roberts Mar. 15, 1910 1,857,289 Schwartz May 10, 1932 2 059,387 Nanfeldt Nov. 3, 1936 

